The accompanying table shows results from regressions performed on data from a r

Question

The accompanying table shows results from regressions performed on data from a random sample of 21 cars. The response? (y) variable is CITY? (fuel consumption in? mi/gal). The predictor? (x) variables are WT? (weight in? pounds), DISP? (engine displacement in? liters), and HWY?(highway fuel consumption in? mi/gal). The equation CITY=?3.14+ 0.822 HWY was previously determined to be the best for predicting city fuel consumption. A car weighs 2800 ?lb, it has an engine displacement of 1.8 ?L, and its highway fuel consumption is 37?mi/gal. What is the best predicted value of the city fuel? consumption? Is that predicted value likely to be a good? estimate? Is that predicted value likely to be very?accurate? The best predicted value of the city fuel consumption is _____ mi/gal The accompanying table shows results from regressions performed on data from a random sample of 21 cars. The response? (y) variable is CITY? (fuel consumption in? mi/gal). The predictor? (x) variables are WT? (weight in? pounds), DISP? (engine displacement in? liters), and HWY?(highway fuel consumption in? mi/gal). The equation CITY=?3.14+ 0.822 HWY was previously determined to be the best for predicting city fuel consumption. A car weighs 2800 ?lb, it has an engine displacement of 1.8 ?L, and its highway fuel consumption is 37?mi/gal. What is the best predicted value of the city fuel? consumption? Is that predicted value likely to be a good? estimate? Is that predicted value likely to be very?accurate? The best predicted value of the city fuel consumption is _____ mi/gal The accompanying table shows results from regressions performed on data from a random sample of 21 cars. The response? (y) variable is CITY? (fuel consumption in? mi/gal). The predictor? (x) variables are WT? (weight in? pounds), DISP? (engine displacement in? liters), and HWY?(highway fuel consumption in? mi/gal). The equation CITY=?3.14+ 0.822 HWY was previously determined to be the best for predicting city fuel consumption. A car weighs 2800 ?lb, it has an engine displacement of 1.8 ?L, and its highway fuel consumption is 37?mi/gal. What is the best predicted value of the city fuel? consumption? Is that predicted value likely to be a good? estimate? Is that predicted value likely to be very?accurate? The best predicted value of the city fuel consumption is _____ mi/gal

Explanation / Answer

The predicted value is

CITY=?3.14+ 0.822 HWY

= -3.14 + 0.822*37

= 27.274 mi/gal

This is not the best predicted value of the city fuel consumption as the predictor? (x) variables are WT? (weight in? pounds), DISP? (engine displacement in? liters) are not part of the equation CITY=?3.14+ 0.822 HWY

The best predicted value of the city fuel consumption will be involve

CITY = a*WT + b*DISP + c*HWY + d

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